Rules of the Air Article 29
Information relative to an intended flight or portion of a flight, to be provided to air traffic services units, shall be in the form of a flight plan.
中文原文 飛航規則第29條
航空器應將有關飛航資料依飛航計畫格式提報飛航服務單位。
English translation for reference only; the Chinese text prevails. Not legal advice.